Safety attachment for lamps.



D. B. STEVENSON.

SAFETY ATTACHMENT FOR LAMPS.

APPLICATION FILED DEC. 4, 1913.

1,096,066. Patented May12,1914.

COLUMBIA PLANOGRAPH co wnsulNu'ruN, lg. c.

DAVID BowLBY STEVENSON, or CHESTER, wns'r VIRGINIA.

SAFETY ATTACHMENT FOR LAMPS.

Specification of Letters Patent.

Patented May 12, 1914.

Application filed December 4, 1913. Serial No. 804,720.

To all whom it may concern Be it known that I, DAVID BowLBY STE- VENSON, citizen of the United States, residing at Chestenin the county of Hancock and State of lVest Virginia, have invented certain new and useful Improvements in Safety Attachments for Lamps, of which the following is a specification.

This invention relates to improvements in lamps of the class in which a wick is employed as a part of the burner, and has for one of its objects to provide a simply constructed attachment whereby the explosion of the gas generated by the oil is prevented.

Another object of the invention is to provide a simply constructed device which may be applied without material structural change to lamps and burners of various constructions.

With these and other objects in view the invention consists in certain novel features of construction as hereinafter shown and described and then specifically pointed out in the claims, and in the drawings illustrative of the preferred embodiment of the invention.

Figure 1 is a sectional elevation of a portion of a lamp and its burner with the improvement applied. Fig. 2 is a side elevation of a portion of the attachment.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

The improved device may be applied without structural change to any of the various forms of lamps in which a wick is employed, the lamp being represented conventionally at 10 and having the internally threaded burner coupling ring 11.

The burner is represented conventionally at 12 and provided with the coupling member 13 to engage in the member 11. The improved attachment is coupled into the ring 11, while the burner 12-13 is coupled to the attachment as hereafter explained.

The attachment whereby explosions are prevented includes a tubular sleeve 14 enlarged at its upper end into an annular head 15 and with an upper open end threaded to receive the burner coupling 13, as shown. Between the sleeve 14 and the head 15 an annular externally threaded portion 17 is formed with a lateral bearing shoulder 18, the threaded portion 17 engaging the burner receiving collar 11 of the lamp with the shoulder 18 bearing upon the upper face of the collar.

Slidably disposed upon the sleeve 14 is a shell 19 closed at the lower end, as shown at 20, and with lateral apertures 21 to per mit the oil to enter the shell and the sleeve. The wick of the burner indicated at 22, is received in the sleeve 14 and the shell 19, as shown, the shell 19 frictionally engaging the sleeve 14 so that it may be readily adjustable longitudinally to correspond to the length and bulk of the wick and likewise correspond to the depth of the body 10 of the lamp.

Formed in the threaded portion 17 of the attachment is a channel 23 which extends part way around the enlargement and is formed with a downwardly directed branch 24 at one end and an outwardly directed branch 25 at the other end, the latter leading int-o the outside air as shown in Fig. 1. By this means a lateral vent is produced which communicates at one end with the interior of the body 10 of the lamp and at the other end with the outside air. It will be noted that the vent does not extend directly between the body 10 of the lamp and the outside air, but pursues a circuitous path so that the escaping gas is caused to traverse for a considerable distance before it escapes into the air, and is thus prevented from coming in direct contact with the flame of the lamp through the usual vent of the burner. By this means all danger of explosion is obviated, as the flame by this means is effectually prevented from entering the body of the lamp.

The improved device is simple in construction, can be inexpensively manufactured and applied and without material change in the lamp or burner, and does not materially increase the bulk of the burner or the lamp, or detract from its appearance.

Having thus described the invention, what is claimed as new is:

1. A device of the class described comprising a tubular member adapted to support a lamp burner and to receive the wick of the same, said tubular member formed with a threaded portion adapted to engage the threaded collar of the lamp body and having a vent passage within the threaded portion and extending partly around the same and opening at one end into the lamp body and at the other end into the outside air.

2. A device of the class described com prising a tubular member open at the ends and adapted to support a lamp burner and to receive the Wick of the same, a shell slidable over said tubular member and having an oil opening, said tubular member being adapted to engage the body of a lamp and having a vent opening at one end into the lamp body externally of the tubular member .10 and at the other end into the outside air.

3. A device of the class described comprising a tubular member adapted to support a lamp burner and to receive the Wick extending partly around the same and opening at one end into the lamp body and at the other end into the outside air.

In testimony whereof I affix my signature 20 in presence of two Witnesses.

DAVID BOWLBY STEVENSON.

Vitnesses JOHN C. OWEN, O. O. ALmsoN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. 0. 

